Ore-milling apparatus.



PATENTED JUNE 23, 1903..

G. R. TUTTLB. ORE MILLING APPARATUS.

APPLICATION FILED D30 26 1902 N0 MODEL.

gm Ad :AA 21 W/ 77VE55E5- @{M Q Mz A A 'To all whom/it may concern.-

UNITED STATES] Patented June 23, 1908.

ORE-=MILLING APPARATUS.

SPECIFICATION fonning part of Letters Patent No. 731,634, dated June 23,1903.

Application filed December 26, 1902. Serial No. 136,549. (No model.)

Be it known that I, GEORGE R. TUTTLE, a citizen of the United States,residing atGrass Valley, county of Nevada, State of California, haveinventedcertain newand useful Improvements in Ore-'Millin g Apparatusand I do herebydeclare the following to be a full clear, and exactdescription of the same.

The present invention is designed for use in connection with orestamp-batteries, the object of the invention being the providing ofmeans whereby the necessity of stopping;

the working of the stamp mill or battery during the operation 'ofdressing the amalgam plates is obviated, thereby permitting the work ofthe stamp or battery to continue without interruption.

'lo comprehend the invention, reference Q should be had to theaccompanyingsheet of drawings, wherein- Figurel is a perspective view ofthe apparatus, and Fig. 2 a top plan view of the mechanism disclosed byFig-1 of the drawings.

In the drawings the numeral 1 is used to indicate the mortar of anordinary ore stampmill, from which mortar extends a projecting lip 2.

To the mill-floor 3 the rails 4 are secured, which rails runtransversely to the 6 until it bears thereagainst.

stamp-mill mortar. Upon the tracks work the rolls or Wheels 5 of thetables 6 7, which tables support the amalgamating-plates S 9.

WVhen ama1ga1nating-plate 8, resting on table 6, is being used, the samestands at right angles to the front of the mortar 1 of the stamp-mill,so as to receive the pulp discharged therefrom over lip 2. The upper endof table 6 andjplate 8 rest below the projecting mortar-lip 2, so thatthe discharge from the lip or the material delivered therefrom fallsonto the head-end portion of the amalgamating-plate placed thereunder.The bed of each table inclines toward the lower or' discharge end 10, sothat the receivingplate or lmillman by forcing table 7 transversely forwithout requiring the stamps to be thrown out of operation.

After the loaded plate has been moved to one side the same is dressedand placed in condition to take the place of plate 9 when required to bedressed. In removing the plate 9 from the field of operation theoperation previously described is reversed-that is, table 6, with itsdressed amalgamatingplate, is gradually moved into the field of action,so as to force table 7 with its plate to 'one side of the mortar.

Ordinarily one hour is required, twice a day, to properly dress a set ofplates. With out provision being made to substitute one plate for theother without stoppage of the stamp-battery considerable time is lost inhanging up the stamps during the change of plates. It is this waste timethat the present invention seeks to provide against.

Having thus described the invention, what is claimed as new, and desiredto be protected by- Letters Patent, is-

1. An ore-milling apparatus comprising in combination with a stamp-mill,a series of tracks arranged transversely to the stampmill, a pair ofindependently-movable tables working thereon, and an amalgamating-platecarried by each table, said plates being alternately moved in front ofthe stamp-mill to receive the pulp therefrom.

2. An ore-milling apparatus comprising a stamp-mortar, a discharge-lipprojecting therefrom, of parallel tracks arranged transversely to themortar, independently-movable tables working thereon, amalgamatingplatescarried by the table, the tables being so arranged that the movement ofone table into the field of action forces the other table with itsamalgamating-plate therefrom.

In witness whereof I have hereunto set my hand.

GEORGE R. TUTTLE.

WVitnesses:

J. M. THOMAS,

E. OPIE.

